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Hydrodynamic performance of additively manufactured minichannels
2021 20th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (iTherm), 2021Additive manufacturing can be used to fabricate components with complex flow channels for a variety of applications. Examples includes minichannels through with fluids flows for heat transfer applications. However, an efficient design of such systems requires a deep understanding of the thermal and hydrodynamic performance on channel surfaces.
Suliman Alfaiz +5 more
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Dewetting from Amphiphilic Minichannel Surfaces during Condensation
ACS Applied Materials & Interfaces, 2020Condensation heat transfer can be altered significantly by changing the texture and material of a surface to promote droplet removal and therefore lower thermal resistance. These designs are often expensive and fragile, however, and are fabricated using micro- or nanoscale features that are not easily implemented in real-world systems. Here, we present
Rebecca L. Winter, Matthew McCarthy
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A Model for Condensation Inside Minichannels
Heat Transfer: Volume 2, 2005Present authors have measured heat transfer coefficients (Cavallini et al. [1, 2]) and pressure drops (Cavallini et al. [3, 4]) during condensation of R134a, R410A and R236ea inside a flat multiport mini-channel tube with a 1.4 mm hydraulic diameter. The experimental heat transfer coefficients (α) have been compared against correlations available in ...
CAVALLINI, ALBERTO +5 more
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Condensation Heat Transfer Inside Multi-Port Minichannels
ASME 2nd International Conference on Microchannels and Minichannels, 2004In this paper the experimental heat transfer coefficients measured during condensation of R134a and R410A inside multiport minichannels are presented. The need for experimental research on condensation inside multiport minichannels comes from the wide use of those channels in automotive air-conditioners.
CAVALLINI, ALBERTO +5 more
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Condensation of propane in vertical minichannels
International Journal of Heat and Mass Transfer, 2019Abstract Experiments and models for in-tube pressure drop and heat transfer characteristics during condensation of propane at low mass fluxes (G = 75–150 kg m−2 s−1) in vertical minichannels (D = 1.93 mm) for two saturation temperatures (Tsat = 47 °C and 74 °C) are presented. Trends in heat transfer coefficients and frictional pressure gradients with
Daniel L. Murphy +3 more
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Rivulet Flows in Microchannels and Minichannels
International Journal of Emerging Multidisciplinary Fluid Sciences, 2010Thin liquid films or rivulets may provide very high heat transfer intensity, especially in the micro region near contact-line and may be used for cooling of microelectronic equipment or engines. The paper focuses on the recent progress that has been achieved in the understanding of the rivulet flow phenomena in micro/mini-channels through conducting ...
Kabov, Oleg +2 more
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Refrigerant Distribution in Minichannel Evaporator Manifolds
HVAC&R Research, 2007The effects of geometry and operating conditions on the distribution of refrigerant R-410A in heat exchangers with horizontal manifolds and vertically oriented minichannels were experimentally investigated to provide the essential design information for the minichannel evaporators.
Yunho Hwang +2 more
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Boiling Heat Transfer in Minichannels
2006the capillary forces predominate, and they determine flow pattern and boiling heat transfer. The interest for study of boiling heat transfer in minichannels increases at last decade due to obtained possibility to makes the channels of millimeter’s and micron’s size for application in wide range of industrial devices for enhancement of heat and mass ...
V.V. Kuznetsov +2 more
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Cylindrical Oblique Fin Minichannel Structure
2014A novel cylindrical oblique fin minichannel heat sink, in the form of an enveloping jacket, is proposed to be fitted over cylindrical heat sources. This chapter provides a description on the numerical simulation and experimental investigation for both conventional and cylindrical oblique fin minichannel, a similarity analysis and parametric study for ...
Yan Fan +3 more
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